Development and initial evaluation of the SCI-FI/AT

Alan M. Jette*, Mary D. Slavin, Pengsheng Ni, Pamela A. Kisala, David S. Tulsky, Allen W. Heinemann, Susie Charlifue, Denise G. Tate, Denise Fyffe, Leslie Morse, Ralph Marino, Ian Smith, Steve Williams

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

22 Scopus citations

Abstract

Objectives: To describe the domain structure and calibration of the Spinal Cord Injury Functional Index for samples using Assistive Technology (SCI-FI/AT) and report the initial psychometric properties of each domain. Design: Cross sectional survey followed by computerized adaptive test (CAT) simulations. Setting: Inpatient and community settings. Participants: A sample of 460 adults with traumatic spinal cord injury (SCI) stratified by level of injury, completeness of injury, and time since injury. Interventions: None Main outcome measure: SCI-FI/AT Results: Confirmatory factor analysis (CFA) and Item response theory (IRT) analyses identified 4 unidimensional SCI-FI/AT domains: Basic Mobility (41 items) Self-care (71 items), Fine Motor Function (35 items), and Ambulation (29 items). High correlations of full item banks with 10-item simulated CATs indicated high accuracy of each CAT in estimating a person's function, and there was high measurement reliability for the simulated CAT scales compared with the full item bank. SCI-FI/AT item difficulties in the domains of Self-care, Fine Motor Function, and Ambulation were less difficult than the same items in the original SCI-FI item banks. Conclusion: With the development of the SCI-FI/AT, clinicians and investigators have available multidimensional assessment scales that evaluate function for users of AT to complement the scales available in the original SCI-FI.

Original languageEnglish (US)
Pages (from-to)409-418
Number of pages10
JournalJournal of Spinal Cord Medicine
Volume38
Issue number3
DOIs
StatePublished - May 1 2015

Keywords

  • Outcome assessment (health care)
  • Psychometrics
  • Quality of Life
  • Rehabilitation
  • Spinal cord injuries

ASJC Scopus subject areas

  • Clinical Neurology

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